I can defecate you can defecate she can defecate we can defecate you can defecate they can defecate
V-ing form
I can be defecating you can be defecating she can be defecating we can be defecating you can be defecating they can be defecating
Perfect
I can have defecated you can have defecated she can have defecated we can have defecated you can have defecated they can have defecated
V-ing perfect
I can have been defecating you can have been defecating she can have been defecating we can have been defecating you can have been defecating they can have been defecating
Negation
Simple form
I cannot defecate you cannot defecate she cannot defecate we cannot defecate you cannot defecate they cannot defecate
V-ing form
I cannot be defecating you cannot be defecating she cannot be defecating we cannot be defecating you cannot be defecating they cannot be defecating
Perfect
I cannot have defecated you cannot have defecated she cannot have defecated we cannot have defecated you cannot have defecated they cannot have defecated
V-ing perfect
I cannot have been defecating you cannot have been defecating she cannot have been defecating we cannot have been defecating you cannot have been defecating they cannot have been defecating
Interrogative form
Simple form
can I defecate? can you defecate? can she defecate? can we defecate? can you defecate? can they defecate?
V-ing form
can I be defecating? can you be defecating? can she be defecating? can we be defecating? can you be defecating? can they be defecating?
Perfect
can I have defecated? can you have defecated? can she have defecated? can we have defecated? can you have defecated? can they have defecated?
V-ing perfect
can I have been defecating? can you have been defecating? can she have been defecating? can we have been defecating? can you have been defecating? can they have been defecating?
Interro-negative form
Simple form
can I not defecate? can you not defecate? can she not defecate? can we not defecate? can you not defecate? can they not defecate?
V-ing form
can I not be defecating? can you not be defecating? can she not be defecating? can we not be defecating? can you not be defecating? can they not be defecating?
Perfect
can I not have defecated? can you not have defecated? can she not have defecated? can we not have defecated? can you not have defecated? can they not have defecated?
V-ing perfect
can I not have been defecating? can you not have been defecating? can she not have been defecating? can we not have been defecating? can you not have been defecating? can they not have been defecating?